San Antonio, TX Weather
San Antonio hourly forecast: next 24 hours
Today's high of 95°F (35°C) is right in line with the typical July high of 96°F (35°C).
Current conditions in detail
San Antonio weather tomorrow (Saturday, July 18)
Tomorrow in San Antonio looks sunny, with a high of 94° and an overnight low of 75°. Precipitation chance is modest at 17%. Winds top out near 16 mph, and the UV index reaches 10 (very high).
San Antonio 14-day forecast
About the weather in San Antonio
Located in Texas, United States, San Antonio experiences a humid subtropical climate with hot, humid summers and generally mild winters. Afternoon temperatures peak near 96°F (36°C) in August and dip to about 63°F (17°C) in January, with around 39.1 inches (994 mm) of precipitation falling across the year.
San Antonio weather: quick facts
- Hottest month: August - highs near 96°F (36°C)
- Coldest month: January - highs near 63°F (17°C)
- Record high: 107°F (42°C) · Record low: 8°F (-13°C) (2015–2024)
- Wettest month: May (16 rainy days) · Sunniest: July (12.0 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
Temperatures through the year
The warmest stretch of the year centers on August. Highs average 96°F (36°C) and overnight lows stay near 77°F (25°C). The coolest month is January, with typical highs of 63°F (17°C) and lows around 44°F (7°C). Based on 2015–2024 weather data, temperatures have reached as high as 107°F (42°C) and dropped as low as 8°F (-13°C).
Rain, sun and snow
May is usually the wettest month. It brings about 6.8 inches (172 mm) of rain over 16 days, while February is the driest. July brings the most sunshine, averaging 12.0 hours of sun a day. Snowfall is rare but not unheard of.
Season by season
Spring (March through May)
Spring in San Antonio runs hot, with daytime highs averaging 81°F (27°C) and nights around 62°F (17°C); expect showers on roughly 38 days across the season.
Summer (June through August)
Summer in San Antonio is intensely hot, with daytime highs averaging 95°F (35°C) and nights around 76°F (24°C); expect showers on roughly 25 days across the season.
Fall (September through November)
Fall in San Antonio runs hot, with daytime highs averaging 82°F (28°C) and nights around 64°F (18°C); expect showers on roughly 27 days across the season.
Winter (December through February)
Winter in San Antonio is mild, with daytime highs averaging 66°F (19°C) and nights around 46°F (8°C); expect showers on roughly 24 days across the season.
Average temperatures in San Antonio by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 63° | 44° | 8 | 2.2 in | 7.4 h/day | 65% |
| February | 67° | 47° | 8 | 2.1 in | 7.0 h/day | 67% |
| March | 76° | 56° | 10 | 2.5 in | 7.8 h/day | 66% |
| April | 81° | 61° | 12 | 4.1 in | 8.8 h/day | 67% |
| May | 86° | 69° | 16 | 6.8 in | 9.6 h/day | 74% |
| June | 93° | 74° | 11 | 2.9 in | 11.6 h/day | 69% |
| July | 96° | 76° | 7 | 2.6 in | 12.0 h/day | 64% |
| August | 96° | 77° | 7 | 3.1 in | 11.6 h/day | 62% |
| September | 91° | 73° | 10 | 4.0 in | 10.3 h/day | 66% |
| October | 83° | 64° | 8 | 3.8 in | 9.2 h/day | 63% |
| November | 71° | 54° | 9 | 2.8 in | 7.0 h/day | 70% |
| December | 66° | 48° | 8 | 2.3 in | 6.7 h/day | 69% |